VisClient/org/hfbk/vis/visnode/VisVideo.java

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/*
 * Created on 07.05.2008
 */
package org.hfbk.vis.visnode;


import java.awt.event.MouseEvent;

import org.dronus.gl.Buffers;
import org.dronus.gl.GLUtil;
import org.dronus.graph.Node;
import org.hfbk.vid.VideoFetcher;
import org.hfbk.vid.VideoTexture;
import org.lwjgl.openal.AL10;
import org.lwjgl.opengl.GL11;
import org.lwjgl.util.vector.Vector3f;

public class VisVideo extends VisNodeDraggable {

        final float SCALE=15f;
        
        VideoTexture tex=null;
        VideoFetcher fetcher;
        
        String url;
        
        boolean playing=true;
        
        public VisVideo(Node n, Vector3f position) {
                super(n, position);
                fetcher=new VideoFetcher(n.text);
        }

        public void add(VisNode node) {}

        void renderSelf() {
                
                if (tex!=null){ //we are ready to play
                        float dt=0;
                        if (playing) 
                                dt=getRoot().client.dt;
                        tex.render(dt); // apply texture, maybe signalling end of clip.         
                        
                        //calculate fade away when viewer passes
                        Vector3f pos=new Vector3f(GLUtil.getPosition());
                        float alpha=Math.max(Math.min(-pos.z/20,1),0);
                        GL11.glColor4f(1,1,1,alpha);
                                
                        GLUtil.renderQuad(-w/2,-h/2,w/2,h/2, tex.imagewidth, tex.imageheight);
                        
                        int audioSource=tex.streamer.getAudioSource();
                        if (audioSource>0) {
                                Vector3f worldPosition=traverse(getRoot(), new Vector3f());
                                AL10.alSource(audioSource, AL10.AL_POSITION, Buffers.buffer(worldPosition));
                        }
                }else if (fetcher.streamer!=null){ //the media is opened
                        tex=new VideoTexture(fetcher.streamer);
                        
                        w=tex.width; h=tex.height;
                        float scale=Math.max(w,h); //some nice scaling
                        scale=SCALE/scale;
                        w*=scale; h*=scale;
                        radius=Math.max(w,h);   
                }
        }

        void handleEvent(VisMouseEvent evt) {
                super.handleEvent(evt);
                if (evt.getID()==MouseEvent.MOUSE_CLICKED){
                        playing=!playing;
                        if (tex!=null) tex.streamer.setPlaying(playing);
                }
        }
        
        void closeSelf() {
                if (tex!=null) tex.close();
        }
}

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